2027 ICD-10-CM Diagnosis Code Z33.3Pregnant state, gestational carrier

ICD-10-CM Codes›Z00–Z99›Z30-Z39›Z33

ICD-10-CM Z33.3
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z33.3 is a billable ICD-10-CM diagnosis code for pregnant state, gestational carrier. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64), not accepted as a principal diagnosis, and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Uncomplicated pregnancy, delivery or puerperium.

Code Identity

ICD-10-CM Code
Z33.3
Billable Status
Yes — Valid for Submission
Code Describes
Pregnant state, gestational carrier
Short Description
Pregnant state, gestational carrier
Same as the full description in the CMS dataset.
Parent Code
Z33
Pregnant state

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ30-Z39Persons encountering health services in circumstances related to reproduction
CategoryZ33Pregnant state
This CodeZ33.3Pregnant state, gestational carrier

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z33.3.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).
Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z33.3 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons encountering health services in circumstances related to reproduction (Z30-Z39).

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z33.3: its own notes plus those printed at Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • encounter for procreative management and counseling for gestational carrier (Z31.7)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z33.3, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming Z33.3: they are not reported together with it, unless the two conditions are unrelated.

  • Z31.7 Encounter for procreative management and counseling for gestational carrier
    pregnant state, gestational carrier (Z33.3)
  • Z33.1 Pregnant state, incidental
    pregnant state, gestational carrier (Z33.3)

Excludes2 2

These codes carry an Excludes2 note naming Z33.3: its condition is not part of those codes, and both may be reported when the patient has both.

  • O09.81 Supervision of pregnancy resulting from assisted reproductive technology
    gestational carrier status (Z33.3)
  • Block Z00-Z13 Persons encountering health services for examinations
    examinations related to pregnancy and reproduction (Z30-Z36, Z39.-) names Z30-Z36, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PRG029
Uncomplicated pregnancy, delivery or puerperium
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Pregnancy

You're going to have a baby! It's an exciting time, but it can also feel a bit overwhelming. You may have a lot of questions, including what you can do to give your baby a healthy start. Taking care of your health while you're pregnant will help your fetus develop into a healthy baby. To do that, it's important to:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z33.3 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V22.2 Preg state, incidental
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement Z33.3 replaces the following previously assigned code(s):

  • Z33.1 - Pregnant state, incidental
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z33.3Overview

What is the ICD-10 code for pregnant state, gestational carrier?

The ICD-10-CM code for pregnant state, gestational carrier is Z33.3 (sometimes written as Z333). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z33.3 (Pregnant state) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report pregnant state, gestational carrier on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z33.3 group to?

On inpatient claims, pregnant state, gestational carrier maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.

Can Z33.3 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because pregnant state, gestational carrier describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Who can Z33.3 be reported for?

The Medicare Code Editor checks pregnant state, gestational carrier against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.